Improved machine for stamping and drilling



J. w. FOWLE,

Ore Stamp.

V I Patented Sept. 1, 1863- Witnesses= Inventor:

AM. PHDTO-LITHO.ED. NY.(OSBORNE'S PROCESS.)

I UNITED STATES PATENT OFFICE.

JOSEPH \V. FOWLE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO WILLIAM H.OSGOOD, OF SAME PLACE.

IMPROVED MACHINE FOR STAMPING AND DRILLING.

Specification forming part of-Lrtters Patent No. 39.768, datedSeptember, 1, 1863; antedatcd July 15, 1863.

To all whom it may concern.-

Be it known that I, JOSEPH W. FowLE, of Boston, in the county ofSuffolk, the State of Massachusetts, have invented a new and usefulImprovement on Stamps and Drills for Ores, &c.; and I do hereby declarethat the following is a full and exact description thereof.

The nature of my invention consists in the construction of a clamp orgrip, which takes hold of the stamp or drillrod, and, lifting it to acertain height, releases its hold and lets the stamp drop; in the modeof turning the stamprod, and of stopping and starting the working of thestamp and parts pertaining to it.

To enable others skilled in the art to make and use my invention, I willproceed to describe its construction and operation, with reference tothe annexed drawings.

The same letters refer to the same parts.

Figure 1 represents a front elevation of a stamping-machine. Fig. 2 is aside elevation of it. Fig. 3 is an elevation of clamp or grip, and Fig.4 is a plan thereof. Fig. 5 is a vertical section of the clamp incontact with a grooved rod. Fig. 6 is the vertical section of the clampout of contact with a grooved rod. Fig. 7 is a plan of the parts forturning the stamp-rod.

A A A A, &c., Figs. 1 and 2, is the frame of the stamping-machine,crank-shaft (1 being mounted on its top with the clutch pinion B, thelatter transmitting motion to gear-wheel D. One end of connecting-rod Eis attached to pin S of gear D. The other holds the clampbox F, givingit a vertical reciprocating motion. The clamp is formed of the twoclamplevers G G, (see Figs. 1, 8, 4, 5, and 6,) each of which iscomposed of three parts, the fork is or k, body G or G, and the wedge morm. The fork, Fig. 3, is provided with cogs which fit in correspondingrecesses of the other lever, G. The two forks k k of the two levers G Gform a hollow cone, the smaller diameter being rather less than that ofthe stamp-rod, the larger diameter being considerably greater, so as notto come in contact with the rod when turned in elevated position. Thecylindrical part of k k is fitted into a socket of G G, and held andtightened against the stamp-rod N by wedgem m. The bolts 11 H serve asfulcrum to these levers G G, and the ends t i project beyond theclamp-box F. (See Fig. 1.) The clampbox F is secured by ears R B to theguide-rods I I.

k k are spring-pins which press against i i, before clamp-box F hasreached its lowest position.

M M are steps projecting far enough from the frame A A to have it"strike against them near the end of the ascending motion of theclamp-box F, thereby turning the lever G G upward, and releasing thestamp-rod N from their grasp. The collar P, sitting loose on stamp-rodN, (see Figs. 1 and 2,)friction pawl Q, with springO, connecting-rod T,attached to a cylinderical part, a, which turns in a socket of P, withone end and turning the swivel-pin W on frame A with the other, impartsrotary motion to stamp-rod N.

A A are two clasps, held in their elevated position by levers U U onspindle V, which is worked by crank w, pitman w, stud y, pin 2', andhand-lever B. The stud 3 with pin 2, sits also on slide-rod '0,

attached to one end of it, and by fork t, also connected with the collarof clutch s, which moves on spline r, and connects and disconnectsclutch-pinion B from the motion of crank-shaft O. In Figs. 3 and 6 thestamp rod N is represented with annular grooves to insure a better gripof the clamp-levers G G.

The operation of the machine is as follows: The machine being set inmotion, the clampbox F moves to its lowest position,the clamplevers G Gincline downward on account of the fork ends being heavier than i i butas soon as it" strike on the spring-pins is k', the fork ends are stillmore forced against the stamp-rod N. At the ascending motion of clampboxF, the stamp-rod N is carried with it, and the weight of rod N tends toincrease the grip, by forcing the upper edges of the fork ends of leversG G downward until the ends 41 i run against the stops M M, when thefork ends of G G are turned upward, and the stamp-rod N, instantaneouslyreleased, drops down upon the ore. The collar P, Figs. 1, 2,

and 7, is pressed by friction-pawl Q and spring 0 just enough againststamprod N to ascend with it, and by its connection with swivelpin W, byconnecting-rod T, the end a is drawn toward the frame A A and turns thecollar P collar a being firmly with it. In descending the friction'pawlQ,

grips the rod N and turns it in the opposite direction. If stamp-rod Nis to be stopped at any desired height dnrin g its ascendingmotion,pushlever B toward frame A. This drives slide-rod v in opposite direction,and with it studgpitman w, crank w. Levers U U are moved downward, andthe grasps A A close upon the shaft, at the same time the clutchdisconnects the clutch-pinion B from crankshaft (J, and all operation isstopped at once.

The advantages gained by these improvements are independent motion ofstamps from one another, the same head of stamp-rod at differentthicknesses of ore, the easy and instantaneous stopping of the stamp atany desired height, and, by means of the turning of the stamp, a fasterand more complete crushing of the ore.

What I claim as my invention, and desire to secure by Letters Patent, is

1. To construct a clamp, consisting of the pawl Q, spring 0,connecting-rod T, and

swivel-pin W.

4. To stop and start the working of the' stamp or drill rod and partsconnected with it by means of clasps A A, levers U U, spindle V, crank11;, pitman ac, stud 3 pin 2, and

hand-lever B, as specified above.

In witness whereof I have hereunto subscribed my name the 2d day ofJune, 1862.

' JOSEPH W. FOWLE. Witnesses;

M. S. G. WILDE, W. H. Oseoon.

